It may lead to trade protectionist countermeasures.
That could lead to trade sanctions against China.
"Anger can lead to trade problems, and ultimately to military confrontation," he told me.
He wrote that such a subsidy might lead to trade retaliation from other countries.
This can sometimes lead to trade-offs between good and bad effects.
Such violations could lead to trade sanctions costing the United States and its exporters millions of dollars.
It could also lead to trade barriers between the close neighbours, and weaken confidence in the Northern Ireland peace process.
But Mr Kirchner has indicated that he will ignore any rulings against the government, even though failure to comply could lead to trade sanctions.
That may reopen wounds that appeared cauterized after the United States decided against labeling China a "currency manipulator," a label that can lead to trade sanctions.
Indeed, in its report to Congress last month, the Treasury department declined to cite China as a currency manipulator, which, under the law, could lead to trade sanctions.
